FTS Forest Technology Systems DTS-12 Digital Turbidity Sensor Optical Black Scatter Measurement System
Used see photos.
From the manufacturer:
"Options: Deployment guide supports theDTS-12 when deployed in a 4” PVC standpipe. Bracket at the rear supports a rod for recovery from monitoring position. Connect the DTS-12 directly to an ISCO automatic water sampler with an ISCO interface cable. SENSOR TYPE
Temperature Encapsulated thermistor
Turbidity Optical nephelometer (sidescatter)
RANGE 0 to 1,600 NTU (nominal)
ACCURACY (TURBIDITY)
Accuracy (@ 25˚C)* ±2% of reading + 0.2 NTU (0-399 NTU)
±4% of reading (400-1,600 NTU)
Resolution 0.01 NTU
Temp. coefficient (0-40˚C) < -0.3% / ˚C
ACCURACY (TEMPERATURE) ±0.2 ˚C
SUPPLY VOLTAGE RANGE 9.6V to 16V
CURRENT CONSUMPTION (TYPICAL)
Standby 0.35 mA
Operating 50 mA
Motor wiping 200 mA
DEPTH RATING 98 ft. (30m)
WIPE TIME 5 seconds (nominal)
OPERATING TEMPERATURE +32˚F to 104˚F (0˚C to +40˚C)
COMMUNICATIONS PROTOCOL SDI-12, version 1.3
MEASUREMENTS RETURNED
The following are computed from 100 instantaneous
samples taken: Mean, Variance, Median, BES, Min,
Max, Temperature
SAMPLE RATE 20 Hz
The marine-capable DTS-12 is the World’s Best Instream Turbidity Sensor. Using true Nephelometric geometry, along with a durable optical face and angled head that sheds bubbles, it provides extremely clean, highly precise data with repeatable, long-term accuracy. The DTS-12 exhibits less than 2% annual optical drift, providing an incredible 12-month recalibration interval. The unique self-cleaning wiper minimizes bio- fouling. These features can typically save 11 site visits per year. Set it and forget it. For up to 12 months"
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